21372568

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{379}}^1$

素因数の和:464

約数の個数: 64

約数和(自身を含む): 49248000

約数和(自身を除く): 27875432

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 53, 56, 76, 106, 133, 152, 212, 266, 371, 379, 424, 532, 742, 758, 1007, 1064, 1484, 1516, 2014, 2653, 2968, 3032, 4028, 5306, 7049, 7201, 8056, 10612, 14098, 14402, 20087, 21224, 28196, 28804, 40174, 50407, 56392, 57608, 80348, 100814, 140609, 160696, 201628, 281218, 381653, 403256, 562436, 763306, 1124872, 1526612, 2671571, 3053224, 5343142, 10686284, 21372568]

約数ペア:

[(1, 21372568), (2, 10686284), (4, 5343142), (7, 3053224), (8, 2671571), (14, 1526612), (19, 1124872), (28, 763306), (38, 562436), (53, 403256), (56, 381653), (76, 281218), (106, 201628), (133, 160696), (152, 140609), (212, 100814), (266, 80348), (371, 57608), (379, 56392), (424, 50407), (532, 40174), (742, 28804), (758, 28196), (1007, 21224), (1064, 20087), (1484, 14402), (1516, 14098), (2014, 10612), (2653, 8056), (2968, 7201), (3032, 7049), (4028, 5306)]